MLB.com's Carrie Muskat has been covering Major League Baseball since 1981 and is the author of "Banks to Sandberg to Grace: Five Decades of Love and Frustration with the Cubs." You can follow her on Twitter @CarrieMuskat. Here, she blogs about the Cubs.

8/4 Closing time

Kevin Gregg will get Tuesday off as well from closing duties for the Cubs to rest a tired arm. Gregg said the problem was similar to what’s called a “dead arm” that most pitchers go through in Spring Training

“We all play with aches and pains and things like that,” Gregg said. “I’m giving it some good, heavy treatment for a couple days and see where that takes us.”

So, who’s the closer? On Monday, it was Carlos Marmol, but he threw 30 plus pitches. Angel Guzman would most likely get the call if the Cubs find themselves in a save situation.

As for B.J. Ryan, don’t expect to see him too soon. The left-hander walked two on Monday in a game with Triple-A Iowa and has not shown any improvement in velocity or command. He now has pitched in four games, walking five and striking out four.

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